Truck-frame.



S. HANSSON.

TRUCK FRAME. APPLICATION FILED 001. 18. I916.

3 SHEETS-SHEET I- Patented July 17, 1917.

s. H-ANSSON.

TRUCK FRAME.

APPLICATION FILED OCT. 18.

ma ma. I PatentedJulyl7,1917.

3 SHEETS-SHEET 2.

WW9 m $1161.10

Fro.

SOREN HANSSON, OF NEW GLASGOW, NOVA SCOTIA, CANADA.

TRUCK-FRAME.

Specification of Letters Patent.

Patented July 17, 1917.

Application filed October 18, 1916. Serial No. 126,339.

' on journal boxes and support from a depending portion at their center a bolster upon which the body of the car rests. These frames must necessarily have great strength and at the same time they should be as small and light as possible so as to occupy little space and not unduly increase the weight of the truck. The frames must be constructed within certain limits as to width because the lower edge of the depending portion must be a certain distance above the surface of the truck upon which the car is to run and the upper portion of the side frame must not be too high in order not to require the car body to be mounted too high.

When the frames are made of cast metal they are heavy, clumsy, and subject to breakage by shock. When they are fabricated out of various metal shapes which are riveted or otherwise fastened together, they are relatively expensive and subject to all the defects of such built-up structures. The present invention relates to an improved method of making side frames from a single piece of rolled plate metal, said frame having all the advantages ofa cast frame with increased strength, especially as to tensile strains and resistance to shockwhich inheres in the character of the metal used. By this improved process a neat, relatively light and strong side frame may be inexpensively produced.

One of the objects of the invention is to provide an improved side frame for trucks and a process of making the same.

Another object is to provide an improved integral side frame produced from a single sheet of rolled metal plate. 1

Other objects and advantages will be hereinlafter described.

embodiments of the invention. The views of the drawings are as follows:

Figure 1 is a plan view of a sheet metal plate showing in dotted lines the manner in which the side frames are cut out of it.

Fig. 2 is a plan view of the stamping as cut from the plate.

Fig. 3 is an end view of the frame shown in Fig. 2.

Fig. 4 is a plan view of the stamping after it has been subjected to certain forging operations.

Fig. 5 is a cross section on the line 55 of Fig. 4.

Fig. 6 is a cross section on the line 6-6 of Fig. 4.

Fig. 7 is a cross section on the line 7-7 of Fig; 4.

Fig. 8 is a cross section on the line 88 of Fig. 4.

- Fig. 9 is a side elevation of the central portion of the side frame showing the spring plank of the truck frame in position.

Fig. 10 is across section on the line 10-10 of Fig. 9.-

Fig. 11 is a side elevation of a modified form of the truck frame.

Fig. 12 is a top plan view thereof.

Fig. 13 is a cross section on the line 13-13 of Fig. 11. I

Fig. 1 isa side elevation of the central portion of a form of the truck frame similar to that disclosed in Fig. 1 but having a different shape given to the forged portions thereof.

f Fig. 15 is a cross section on the line 1515 of Fig. 14.

Fig. 16 is a sectional view of an alternative shape that may be given to the forged portions of a frame such as shown in Fig. 14:.

The side frame is cut from a blank of rolled plate metal. by means of a suitable stampingv or cutting machine in the manner illustrated in Fig. 1 and to the shape illustrated therein. This method of cutting the blank from a sheet metal plate is efficient and economical since it reduces the amount of waste metal to a minimum. The metal from the openings in the blank may be used for making other and smaller accessories for cars and car trucks.

The side frame as stamped from the metal strip is of the shape shownin Fig. 2 and comprises what is known in the art as a pedestal; frame. It is provided with a 45 I necessary and later reduced in width and bolster opening 1' for receiving a'bolster for "supporting the car body, and recesses 2 and 3 forming pedestal jaws 4, 5 and 6, 7 which fiti'over the journals supported by the axles of the car wheels. The upper portion of the frame-8,9, 1 0, constitutes what is known as the upperchord, and the lower portion 11, 12, 13, constitutes the lower chord. The frame also has openings 14 and 15 stamped therein, the'metalbeingcut out to form these openings'becauseit is not needed at these points.

The verticalportions 16 and 17 constitute H what are known as the columns of the truck. The frame is stamped from a metal strip 15;

of uniform thickness, preferably a strip aboutltwo inches thick. This thickness of metal produces a frame in which substantially all the parts have suflicient strength total width of the frame must be within for the purpose required. 7

As previously pointed out, however, the

certain limits. This requires that the portions of the frame above and "below the bolster opening be relatively narrow. If

they are made too narrow, they will in some cases not possess the required strength; 'If,

in order to give them the necessary strength,

the thickness of metal used to make the truck is increased,the other portions of the frame-.will have excess strength, and the weight and cost of the frame will be unduly increased. QInorder to avoid this'difficulty if the portions of the side frame 9 and-12 above and below thebolster opening are made wider than desirable for the finished frame eration to decrease their width and increase 'thelri thickness without decreasing their )7 strength. The excess widthof-metal is pref- I ithattheppening in the frame as it is'cut' erably. provided-in the bolsterfopening so from a blank is smaller than thatrequired in finished frame.

.in theistamped-ou ished side frame.

A qThe portions of the frame above the recesses 2. and'3 may also be made wider than increased'in thickness, as will be hereinafter j described. vThe: recesses are not made as deep t blank as theyare in a fin- Aftertheframe is cut to the shape shown thiekness atfcertain-points and reduce its low the openingis shown in cross section .in

IThisforging operation reduces the width '7 of'the portionsQ; and 12 so that the total .f width-of the truck is. within the proper llmll sr At the same time the strength of and they are then subj ected' to a forging opplank, and lateral movement thereof Fig.4. Thls gives the frame a neat appearance and destroys rough edges which would give the frame an unfinished appearance and be detrimental in handling the same. The manner in which the edges are beveled is clearly illustrated by the cihss section views of Figs. 6 and 7 which illustrate the cross section of the portion 8 of the'upper chord and the portion 11 of the lower chord.

By the process above outlined a side frame may be'cut from a sheet of rolled plate metal. with minimum waste of material. The forging process serves to strengthen the pertions subjected to the greatest shock and at the same time give them the requisite width that is necessary in a practical frame of this type. The manufacturing process is simple,

relatively inexpensive and produces a neat,

rigid frame having the required strength with a minimum weight. The inherent properties of rolled sheet metal enable the frame to withstand tensile strains and shocks much better thanthe frames which are cast or built out.of various iron shapes. p The metal above and below the bolster opening and above the journal recesses may be otherwise shaped than as shown in cross section in Fig. 5. For example, Figs. 14 and 15 illustrate a modification in which the metalis otherwise shaped. Fig. 16 illustrates a modification in which the forged portions are given a channel shape. It is also within the scope of the invention to shape the portionsabove and below the bolster opening dilferently, or the portions of the frame adjacent the pedestal jaws may be shaped differently than-the portions adjacent the bolster opening. It is also to be understood that other portions of the frame 5 canbe forged to thicken them if desired.

The manner in which the spring plank for supporting the bolster is attached to a frame of this character is shown in Figs. 9 and 10. The plank 20 comprises a channel beam having riveted to one of its ends a cast or forged bracket 21 having projections 22 and 23 which extend down on opposite sides of the portion 12 of the lower end. These projections prevent endwise movement of the 125.

is )revented by the edges of the bolster opening. One of these brackets 21 is riveted or otherwise secured to each end of the plank 20, as will be readily understood. With this eonstruction the bolster plank may be easily removed and the truck taken apart without unfastening any bolts or rivets by merely taking out the bolster and lifting outthe spring plank.

A further modification is illustrated in Figs. l1, l2 and 13. In this form the portions of the frame above and below the bolster opening are forged into the shape of an I-beam, as illustrated in Fig. 13. Also, in this form, substantially the entire upper chord of the frame is forged, as will be clear from an inspection of Fig. 11. The forging below the bolster opening also extends on both sides thereof. The I-beam shape gives a maximum strength for a minimum width, as will be readily understood. If desired, the forging may be extended farther or not as far as in the modification of Fig. 11. In each case, wherever it is desired to forge a portion of the frame, that portion is cut out in the blank of greater width than it is desired in the finished frame. The portion is then forged to reduce the width and increase its thickness by shaping it in any one of the several shapes shown or in any other desirable shape.

It is to be understood that the structure shown is for purposes of illustration only and that other structures may be devised which come within the spirit and scope of the appended claims.

What is claimed is 1. The method of making a vehicle truck side frame which comprises stamping said frame out of a single sheet of metal of uniform thickness to thereby produce a frame of uniform thickness, and forging certain portions of the stamping to decrease the width and increase the thickness of said portions.

2. The method of making a vehicle truck side frame which comprises stamping said frame out of a single sheet of metal of uniform thickness with certain portions of the stamping of excess width, and forging said 7 portions to reduce their width and shape them to give the required strength.

3. The method of making a vehicle truck side frame which comprises stamping said frame out of a single sheet of metal of uniform thickness with certain portions of the stamping of excess width, and forging said portions to reduce their width and increase their thickness. i

4. The method of making a vehicle truck side frame which comprises stamping said frame out of a single sheet of metal of uniform thickness to form a frame of uniform thickness with a bolster opening therein, and forging the metal above and below the bolster opening to decrease its width and increase its thickness.

5. The method of making a vehicle truck side frame, which comprises stamping said frame out of a single sheet of metal with a bolster opening therein, the metal above and below said opening being of excess width, and forging the metal above and below the bolster opening to decrease its width and shape it to provide the proper strength for the required width.

6. The method of making a vehicle truck side frame, which comprises stamping said frame out of a single sheet of metal with a bolster opening of reduced size, and forging the metal adjacent the bolster opening to produce an opening of the required size and to shape the metal to give it the required strength.

7. The method of making a vehicle truck side frame which comprises stamping said frame out of asingle sheet of metal of uniform thickness to produce a frame of uniform thickness with a bolster opening therein and pedestal jaws near its ends, and forging the metal adjacent the bolster opening and the pedestal jaws to decrease its width and shape it to provide the proper strength.

8. The method of making a vehicle truck side frame, which comprises stamping said frame out of a single sheet of metal with a bolster opening therein. and pedestal jaws near its ends, and forging the metal adjacent the bolster opening and the pedestal jaws to thicken the metal to give it the proper strength for a required width.

9. The method of making a vehicle truck side frame, which comprises stamping said frame out of a single sheet of metal with a bolster opening therein and recesses near its ends, the metal adjacent the bolster openmg and the recesses being of excess width, and forging the metal adjacent the opening and the recesses to reduce its width and shape it to give the proper strength for the required width.

10. The method of making a vehicle truck side frame, which comprises stamping said frame out of a single sheet of metal with a bolster opening and recesses for the truck journals of reduced size, and forging the metal adjacent the bolster opening and the recesses to thicken the metal and produce openings of the required size.

11. An integral side frame for vehicle trucks cut from a single piece of plate metal and being of uniform thickness throughout I a single piece of metal cut to shape With a' 14. An integral side frame for vehicle trucks cut from a single; piece of plate metal of uniform .thickness and having a bolster opening therem, the portlons of sa d frame above and beloW said opening being forged v to reduce 'their'width' and shaped so that their strength is not decreased.

'; l5;"An'integra1 side frame for vehicle trucks cut from a single piece of plate metal of uniform thickness and having a bolster opening therein and pedestal jaws adjacent its ends, the portions of said frame adjacent the bolster opening and the jaws being forged to decrease their Width. 7 "l 16. A vehicle truck side frame comprising single pieceof metal cut to shape with a bolster openingnear the center thereof and recesses at its ends, the metal adjacent the bolster opening and the recesses being forged to increase its" thickness. V

1 r 17 Avehicle truck side frame comprising bolster opening near the center thereof and pedestal jaWs near its ends, the metal adj acent the bolster opening and the pedestal jaws being forged. to decrease its width and increase its thickness.

7 18. A vehicle truck side frame comprising a single piece of metal out to shape and having a' bolster opening near its centerand recesses at its ends, the metal above and below the bolster opening and above the recesses being forged to increase its thickness.

19. A vehicle truck side frame comprising a single piece of metal cut to shape and having a bolster opening near its center and recesses near its ends, the metal adjacent said openings and said recesses being forged to increase its thickness,and the edges of the frame and the openings therein being beveled. 1 1

p In testimdny whereof, I have hereunto set my hand. 7

*sonEN HANSSON. Witnesses: W i

CHRISTINA Ross, SADIE M. PETTIS.

. Copies of this patent may be obtained fol' five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

